error: `..` can only be used once per tuple pattern
  --> $DIR/tuple_destructure_fail.rs:5:16
   |
LL |     (a, .., b, ..) = (0, 1);
   |         --     ^^ can only be used once per tuple pattern
   |         |
   |         previously used here

error[E0308]: mismatched types
  --> $DIR/tuple_destructure_fail.rs:6:5
   |
LL |     (a, a, b) = (1, 2);
   |     ^^^^^^^^^   ------ this expression has type `({integer}, {integer})`
   |     |
   |     expected a tuple with 2 elements, found one with 3 elements
   |
   = note: expected tuple `({integer}, {integer})`
              found tuple `(_, _, _)`

error[E0070]: invalid left-hand side of assignment
  --> $DIR/tuple_destructure_fail.rs:7:13
   |
LL |     (C, ..) = (0,1);
   |      -      ^
   |      |
   |      cannot assign to this expression

error[E0308]: mismatched types
  --> $DIR/tuple_destructure_fail.rs:8:5
   |
LL |     (_,) = (1, 2);
   |     ^^^^   ------ this expression has type `({integer}, {integer})`
   |     |
   |     expected a tuple with 2 elements, found one with 1 element
   |
   = note: expected tuple `({integer}, {integer})`
              found tuple `(_,)`

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0070, E0308.
For more information about an error, try `rustc --explain E0070`.